Bulgaria is set to experience a variety of winter weather patterns this December, with temperatures and precipitation expected to vary significantly across the country.
According to forecasts from the National Institute of Meteorology and Hydrology (NIMH), temperatures will range from frigid lows of -10°C to -5°C to unseasonably mild highs of 15°C to 20°C in certain regions.
Temperature Trends Reflect Seasonal Norms
While the wide temperature range highlights Bulgaria’s diverse climate, average temperatures across the country are expected to align with typical December norms.
Northern Bulgaria and mountainous areas are forecasted to maintain averages between 0°C and 2°C. In contrast, the Upper Thracian Lowland will likely see slightly higher averages of 2°C to 3°C, with the southernmost regions and the Black Sea coast experiencing relatively warmer conditions of 4°C to 6°C.
The high-altitude mountain regions will endure the coldest weather, with averages ranging from -8°C to -2°C.
Precipitation Close to Monthly Norms
Precipitation levels are predicted to stay near the December norm, with most areas receiving between 40 and 60 liters per square meter.
Mountainous regions could see up to 70 liters per square meter, while the southernmost parts of the country might experience higher amounts, ranging from 70 to 110 liters per square meter.
The month is expected to begin with substantial cloud cover and widespread precipitation. Rain will dominate the lower regions, while snow is forecasted for higher altitudes, particularly above 600–800 meters in Western Bulgaria.
The southwest is likely to witness significant snowfall during this period. A brief lull in precipitation is anticipated mid-period, but another wave of rain and snow will likely follow.
Detailed Outlook for December
The first ten days of the month will feature temperatures close to seasonal norms, with slightly colder conditions in southwestern Bulgaria. Precipitation will be widespread, with snow likely in higher elevations and rain in the plains.
A temporary clearing may provide some respite, but this will soon give way to renewed cloudiness and precipitation.
In the second ten-day period, temperatures will remain near average, and cloud cover will persist. Rain will dominate in the lowlands, while snow is expected in the mountainous regions and higher fields.
The final ten days of December are predicted to bring a reduction in precipitation. Occasional clear skies will offer breaks from the overcast conditions, but calm winds in the lowlands could result in fog and low-lying cloud layers. Temperatures will continue to reflect typical seasonal values.
Impact of the Forecast
December marks the official start of winter in Bulgaria, with the country’s varied topography playing a significant role in shaping local weather conditions.
Northern Bulgaria and mountainous areas can expect colder weather and heavier snowfall, while the southern and coastal regions will enjoy comparatively milder conditions.
The relatively stable forecast is good news for agriculture, tourism, and transportation, as no major deviations from seasonal norms are expected.
However, residents and travelers are advised to remain prepared for periods of significant snowfall in the mountains and potential fog in the lowlands.